A method including: a step of carrying first and second continuous webs in a carrying direction； a step of folding the continuous webs in two； a first attachment step, in which portions of first edges, which extend in the carrying direction of the continuous webs and which are to be leg holes of a worn article, are attached together intermittently in the carrying direction； a step of straightening, in a width direction, creases on one of the continuous web after the first attachment step； and a second attachment step, in which the continuous webs are attached together at least at portions along second edges opposite to the first edges, with the creases being straightened.
